Sash-operating device and lock



` 1,622,949 March 29,1927. N. Q' KELSO SASH OPERATING DEVICE AND LOCK 2Shetswsheet l Filed Oct. 16. 1923 ATTORN EY 1,622,949 March 29, 1927-N,v Q KELSO PERATING DEVICE. AND LOCK Filed oct. 1e, 192s 2 sheets-sheet2 Patented Mar. 29, 1927.

i UNITED STATES PATENT OFFICE. A

NY LA Q. KELSO, OF OKLAHOMA CITY, OKLAHOMA, ASSIGNOR OF ONE-IIALF TOJOHN A.

SEMKE, OKLAHOMA CITY, OKLAHOMA.

SASI-I-OPERATING DEVICE AND LOCK.

Application filed October 16, 1923.

rl`he object of this invention is the provision of means whereby awindow sash or the like is permitted to slide in its casing, and to belocked in either its raised, partly raised or closed position.

To the attainment of the foregoing, the invention consists in theimprovement as hereinafter described and deinitely claimed.

In the drawings Figure 1 is an elevation with parts in section showingthe elements constituting the improvement so arranged as to permit ofthe free sliding of a window sash.

Figure 2 is a similar view showing the sash locked against movement ineither direction.

Figure 3 is a sectional view on the line 3-3 of Figure 1.

Figure 4 is a sectional view similar to Figures 1 and 2 showing the sashlocked to prevent the downward but to allow the upward movement thereof.

Figure 5 is a fragmentary perspective View of a stile of the sash.

Figure 6 is a sectional view von the line 6--6 of Figure 4.

Figure 7 is a perspective view of the slidable member which influencesthe corru gated wheel.

In the drawings the numeral 1 designates a slidable sash, and 2 asutlicient portion of the casing in which the sash moves.

In the present instance one or both of the vertical stiles of the sashhas its outer edge grooved longitudinally and seated in the groove thereis a rack bar preferably in the nature of a transversely corrugatedstrip 3. The rack bar is, of course, secured in the groove.

The casing 2 has a pocket Vlet in the sid-e thereof in which the sash 1slides, and in this pocket there is secured a casing broadly indicatedby the numeral 4. The casing has its front open and its rear wallarranged at opposite outward inclinations toward its center, and itssaid central portion rounded, as at 5. The open face of the casing isclosed by a plate 6 which is centrally provided with a substantiallyrectangular opening 7 arranged opposite the grooved stile of the sash 1.

Freely arranged in the casing and projecting through the opening 7 inthe face plate thereof, there is a wheel 8 that is provided withperipheral teeth or corrugations 9.

Serial No. 668,922.

The wheel 8 normally rests on the inwardly curved head 10 of a rack 11,and the teeth of the rack are engaged by a toothed wheel 12. The toothedwheel is, of course, journaled in the casing, and one of its shafts ortrunnions is provided with a socket 13 that valigns with a round opening14 through the side ofthe casing. Through this opening there is designedto be inserted a key (not shown) having a squared end to be received inthe squared socket 13 whereby the wheel 12 may be turned to move thehead carrying rack 11 vertically in the casing. When the rack is movedto bring its head 10-to the position illustrated in Figure 1 of thedrawings the toothed wheel is so arranged as to permit of the freesliding of the sash in either direction. W'hen the rack member 11 isfurther moved in a vertical direction, as disclosed in Figure 2 of thedrawings, the wheel 8 will bind against the upper inclined wall 15 inthe back of the casing so that movement of the sash in either directionis prevented. Then the rack is lowered, as disclosedin Figure 4 of thedrawings, the toothed wheel 8 is in binding engagement with the lowerinclined wall 16 of the casing and the wedging engagement therebetweenwill prevent the turning of the wheel and the lowering of the sash. Thesash, however, can be raised when the parts are in this position.

l/Vith my improvement, the employment of the usual weights is entirelydispensed with and the sash is arranged for free sliding in the casing.However, with my improvement the sash may be locked in either itsraised, partly raised or lowered position. The construction iscomparatively simple, may b e cheaply manufactured, marketed andinstalled, and while I have illustrated and described a preferredembodiment thereof it is to be understood that I may make such changestherefrom as fall withinvthe scope of what I claim.

Having described the invention, I claim 1. A means for locking andcontrolling the movement of a vertically slidable member which includesa guide for the member, a casing in the guide `having its rear wallinclined inwardly from the center thereof, a toothed wheel in the casingprojecting therethrough and contacting with the slidable member andnormally gravitating to the bottom of the casing for frictionallyengagment in either direction.

2. rllhe combinationwith a vertical slidablemember and a Yguidetherefor, of a casing let intheguide and having` an open faceopposite-.the:slidable member, the rear Wall :Qfthe casingbeingiroundedand fromthence k being inclined inwardly in opposite direc-!20 .tonsito thetop andy bottom thereof, a grav- .ity influenced toothedvWheel in the casing normally engaging; the lower inclined Wall thereofand the slidable member for holding the Said slidable member frommovement in one direction, a heeded rack having: a toothed Shank in thecasing' and underlying the Wheel, a key operated Wheel engaging the rackand designed when rotated` to raise the said rackto bring the toothedWheel in the center of the casingr and out of frictional engagement witheither lthe casing or the slidablemeniber or to further movethesaid`toothed Wheellto cause a binding action between said Wheel, the upperportion vof the casino; and the slidable member or for holding; theslidable member ,from movement 1n .either direction.

In testimony whereof lI afIiX mysignature 4NYLA. yQ. KELSO.

